Kurt,,
If the engines ARE 26cc,, I would wonder if they are
airplane engines.. Most airplane engines in the 26cc range
use 16X8 to about 18X8.. With a 14X8 prop on a 26cc
engine it would be making a LOT of RPM... I would
suggest you check to be certian of manufactor and size
of the engines..
As Bipe said,, the G26 powered Nosen 310 is a great
combination.. I would guess the one with OS is a lot
lighter and depanding on how it is proped might be
a tad faster... Just remember, fast is not
always fun...
If those engines are Homelites or that type of engine
they a re very heavy for the power they put out..
You would do much better with a real airplane engine..
And again, these planes fly VERY easy and make a trainer
seem hard...
.